YITAMOTOR 6" Running Boards Installation Guide for 2019-2025 Chevy Silverado & 2020-2025 GMC Sierra Double Cab

Before Installation

Read this instruction carefully before starting installation. Proper tools will improve the quality of installation and reduce the time required. If missing parts or any damage found, please take a picture and contact YITAMOTOR. Professional installation is highly recommended. Perform periodic checks to ensure all mounting hardware remains secure and tight.

Step 1: Mounting Position Identification

Locate Mounting Positions and Remove Plugs

• Locate three (3) mounting positions on each side of the vehicle's inner rocker panel.
• Remove the rubber plugs from these identified mounting positions on the inner rocker panel.

Diagram Description: Visuals show the driver side of a double cab vehicle, highlighting three mounting points along the rocker panel and indicating the front of the vehicle.

Step 2: Initial Bracket Attachment

Attach Brackets to Rocker Panel

• Attach a bracket to the inner rocker panel.
• Secure the bracket using two (2) M8 hex bolts and two (2) M8 flat washers.
• Repeat this process to install the remaining brackets. Do not fully tighten the bolts at this stage.

Diagram Description: Illustrations depict a bracket being attached to the vehicle's inner rocker panel, secured by M8 hex bolts and M8 flat washers.

Step 3: Step Bar Installation

Secure Step Bars to Brackets

• Remove six (6) M8 hex bolts and six (6) M8 flat washers from the step bar assembly.
• Slide the mounting tracks on the step bar to the proper positions.
• With assistance, lift and attach the step bar assembly to the previously installed brackets.
• Secure the step bar to the brackets using six (6) M8 hex bolts and six (6) M8 flat washers.
• Repeat this process to install the step bar on the other side of the vehicle. Do not fully tighten the bolts at this stage.

Diagram Description: Images display a Stainless Steel Step Bar and an Aluminum Alloy Step Bar. Another diagram shows the step bar assembly being mounted to the brackets on the driver side of a double cab truck, with the front indicated.

Step 4: Final Tightening and Checks

Torque Bolts and Perform Checks

• Tighten all M8 hex bolts and nuts to the vehicle with a torque of 15 ft-lbs.
• Adjust the step bar to ensure it is level, then tighten the M8 hex bolts to 15 ft-lbs.
• After the step bar is fully installed, perform periodic checks to ensure all mounting hardware remains secure and tight.

Part List

Diagram Description: Illustrations of individual components: ① Mounting Bracket, ② M8 Hexagon Bolt, ③ M8 Flat Washer, ④ M8 Hexagon Nut, ⑤ M8 Hexagon Bolt (pre-installed on Step Bar), ⑥ M8 Flat Washer (pre-installed on Step Bar).